CVE-2022-49714

Local service interruption via refcount leak

Published Feb 26, 2025 · Updated May 11, 2026

A refcount leak in the Linux kernel allows local users to interrupt service through affected Realtek RTL interrupt-controller mappings. The map_interrupts function retains the node reference returned by of_find_node_by_phandle when of_property_read_u32 reaches its error path because of_node_put is not called. Low privileges and a system using the Realtek RTL irqchip device-tree mapping are required; public records do not identify whether interruption manifests as a hang or crash.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A refcount leak in the Linux kernel allows local users to interrupt service through affected Realtek RTL interrupt-controller mappings. The map_interrupts function retains the node reference returned by of_find_node_by_phandle when of_property_read_u32 reaches its error path because of_node_put is not called. Low privileges and a system using the Realtek RTL irqchip device-tree mapping are required; public records do not identify whether interruption manifests as a hang or crash.

The record

CVE
CVE-2022-49714
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.12
  2. Affected versionversion=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <e85b1b797de0e7a271b906291ce28245822820b8
  3. Affected versionversion=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <eff4780f83d0ae3e5b6c02ff5d999dc4c1c5c8ce
  4. Affected versionversion=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <f6d6223df0666fbc054e3a8c6ac14eb0af37c286

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.12; version=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <e85b1b797de0e7a271b906291ce28245822820b8; version=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <eff4780f83d0ae3e5b6c02ff5d999dc4c1c5c8ce; version=9f3a0f34b84ad1b9a8f2bdae44b66f16685b2143 <f6d6223df0666fbc054e3a8c6ac14eb0af37c286

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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